console.log('hello world.');

let name = 'zphhhhh1';

let age = 18;

let sex = 1;

let a = '2';

let aaa = '2';


let msg = 'from gitee.com edited!';

let msg3 = 'from gitee.com edited!';

let msg4 = 'from local.mac 222';


let msg5 = 'from local.ac 222';

let name = '1';
let name2 = '1';
let name3 = '1';
let name4 = '1';
let name5 = '1';

let name6 = '1';
let name7 = '1';
let name8 = '1';
let name9 = '1';
let name10 = '1';

let b = 1;

let nav = 1;
let nav = 2;
let nav = 3;

let nav = 4;